THe world's only laptop with mouse droppings!!!!!

With my titanium (or whatever it is) 17" laptop I use a laser mouse and have carelessly used it on the case below the laptop , The result is a big black carbon like smear. Does anyone have any kind of idea how I can remove this? I've tried alcohol, GoofOff, and lacquer thinner. seems to make it easier to use my little metal scraper and some of it has been removed, but there's a lot more to go.

Simichrome Polish,takes the burn marks off my Harley's exhaust pipes & brings the chrome back like new.Anyway here is the link;http://simichrome-polish.com/ Scroll down to the bottom of the page after you read the article,for links on where to buy it.

Problems cannot be solved by the same level of thinking that created them. -Albert Einsten